To provide: a modified natural rubber obtained from a solid raw material, e.g., cup lumps, and, despite this, excellent in terms of odor inhibition and degradation resistance; and a rubber composition and a tire each including the modified natural rubber.SOLUTION: The present invention relates to a modified natural rubber produced from (1) a solid raw material obtained from a natural rubber latex containing an antiseptic bactericide added thereto and/or (2) a solid raw material obtained by adding an antiseptic bactericide to coagulates of a natural rubber latex, wherein the antiseptic bactericide is at least one substance selected from the group consisting of triazines, parabens, boric acid compounds, glycol ethers, organic acids having a pKa of 4 or greater, and metal salts of the organic acids.SELECTED DRAWING: None
【課題】カップランプ等の固形原料を原材料とするにもかかわらず、臭気抑制性及び耐劣化性能に優れた改質天然ゴム、これを用いたゴム組成物及びタイヤを提供する。【解決手段】(1)防腐殺菌剤を添加した天然ゴムラテックスより得られる固形原料及び/又は(2)天然ゴムラテックスの凝固物に防腐殺菌剤を添加して得られる固形原料から作製され、該防腐殺菌剤が、トリアジン類、パラベン類、ホウ酸類、グリコールエーテル類、並びに、pKa4以上の有機酸及びその金属塩からなる群より選択される少なくとも1種である改質天然ゴム。【選択図】なし
MODIFIED NATURAL RUBBER AND RUBBER COMPOSITION
改質天然ゴム及びゴム組成物
2021-08-10
Patent
Elektronische Ressource
Japanisch
IPC: | C08C TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS , Behandlung oder chemische Modifizierung von Kautschuken / B60C VEHICLE TYRES , Fahrzeugreifen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen |
Europäisches Patentamt | 2024
|Modified natural rubber or modified natural rubber latex, and rubber composition and pneumatic tire
Europäisches Patentamt | 2015
|Europäisches Patentamt | 2021
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